Drainage system



W. F. HOHORST DRAINAGE SYSTEM Dec, 31, 1935.

' Filed Dec. 7, 1953 WWW/0w [ya/@155,

Patented Dec. 31, 1935 UNITED STATES tATENT OFFICE 2 Claims.

(Granted under the act of March 3, 1883, as

amended April 30, 1928; 370 0. G. 757) The invention described herein, if patented, may be manufactured and used by or for the Government for governmental purposes without payment of any royalty thereon.

This invention relates to a system of drainage, and more particularly to means for carrying off surface drainage from surfaces such as streets or the like.

An object of this invention is to provide simple,

lo durable and inexpensive means for draining the surface of roadways or the like that are flat, consisting of a. combined sewer and main utilities supply conduit at or near the center of the roadway, connected by subsidiary drainage and utill7; ities conduits to the curbs and from thereto adjacent buildings.

A further object being to provide a system wherein, should changes, alteration or repairs to the drainage system or utilities conductors be so necessary the parts of same are easy of access.

One embodiment and arrangement of parts are shown for the purpose of disclosing a preferred form of the device, it being understoodthat slight changes in form and minor details of construction may be resorted to, without departing from the spirit of the invention.

Sinilar numerals indicate corresponding parts in all the figures of the drawing in which:

Fig. 1 is a. plan view of a short section of a roadway provided with my improved combined drainage sewer and utilities conductor conduits.

Fig. 2 is a vertical section taken transversely of the roadway.

Fig. 3 is an enlarged vertical transverse section 1741 of the main sewer, showing the main supply utilities conductors in place therein.

Fig. 4 is a. section on line 44 through a subsidiary drainage branch.

v Reference now being had to the drawing by numerals, l indicates a roadway, 2 the sidewalks,

and 3 the curb.

The drainage system as shown, is best applied to roadways or the like that are now practically H in universal use and consist of a cement surface,

* flat across its face and having a slight grade. Said roads are in many instances improperly drained, for the reason that the surface water under the old system must travel long distances on the surface prior to its being taken therefrom by sewer openings usually located at the bottom of a grade and a long distance from the point at which the rain fell or other water was deposited on the surface of the road.

H The present system provides for conveying the water from practically where it falls, into a combined sewer and conduit 4, and auxiliary combined sewer and conduits 5 arranged at short intervals in the road, through which water and gas mains, and electric light and telephone cables may extend.

The main drainage passage sewer 4 extends longitudinally in or adjacent to the center of the roadway, may be of any preferred construction, preferably reinforced concrete and is of sufiicient height to permit the easy movement of a man in an upright position.

Along in the upper portion of said sewer are arranged the utilities conductors, such as the water main 6, the gas main 1, the electric light and telephone cables 8 and 9 respectively.

Said main combined sewer and conduit may be provided with an outwardly flared opening I 0, into which blocks 1 I preferably of cement or other strong material, are arranged, having grooves or cutaway portions 12 in their sides for the passage of water into the sewer and to facilitate the removal of the blocks.

The auxiliary drain passages 13 are preferably arranged at an angle diagonally across the road- Way from the curb to the main drain 4, through which, when required, utilities conductors may extend as shown at Hi. Said auxiliary drain passages may be of the same cross sectional form as the main drain passage and be covered by blocks 55, having grooves 16 to permit water to reach the pass-age.

Said auxiliary drain passages are so arranged as to give them a fall toward the main drain passage due to the grade of the road as indicated by the arrow. 9

Extension drain passages ll may be arranged at the outer or curb end of the auxiliary drain passages to extend to adjacent buildings (not shown) to take off for instance, rain water and provide a passage through which utilities con- 40 ductors l8 may extend to said building.

The operation is obvious and provides for the direct passage of water, falling on the surface of the roadway, through openings in the main or auxiliary drain block to their respective drain passages through which it passes beneath the surface of the road.

It will be understood that the combination sewer and conduit 4 may be horizontally divided by a partition not shown to provide for street drainage above said partition and sanitary drainage beneath same with the proper connections from adjacent dwellings into the latter.

Having described my invention what I claim and desire to secure by Letters Patent is:

1. A drainage system for roadways and the like having a main drain passage extending longitudinally of the roadway, a plurality of auxiliary drain passages serving the roadway from said main drain passage to the sides of the roadway and communicating with said main drain passage, utilities conductors arranged near the upper portion of the drain passages and blocks having cut-away portions closing said passages, adapted 10 to permit free passage of liquid therethrough, and

to be readily removed to permit cleaning of said' block and access to said utilities conductors.

2. A drainage system for-roadways and the like having an uncrowned surface and a grade comprising, a main drain passage extending longitudinally of the roadway, auxiliary drain passages at close intervals extending from the sides of the roadway and communicating with said main drain passage, utilities conductors arranged at the top of said passages and blocks having perforations arranged to form a closure of the top of said pass-ages adapted to permit free passage of liquid through said blocks directly to the 10 passages, be readily removable for cleaning and permit access to said utilities conductors.

WILLIAM F. I-IOHORST. 

